Not had the warm tingling feeling in the hands and arms before but I do get what they call
Referred Pain, this is where you get some pain but not at the site where you are injecting..............crazy I know
Anyway, as to regards to the loss of insulin when removing the needle, make sure you leave the needle in the skin long enough, try counting to 12 slowly and then remove the needle, this should be enough time to allow the insulin to absorb, if it doesn't work then leave it in the skin longer, when you push on the plunger make sure you do so slowly, if the pen is getting hard to push down on then just change it as it may be faulty.